PHOTOSYNTHESIS, MINERAL NUTRITION AND BIOLOGICAL PRODUCTIVITY PINE STANDS OF DIFFERENT YIELD CLASS IN BELARUS IN ONTOGENESIS

Abstract

By means physiological transformation of taxational data pine stands Belarus Ia-V yield classes were obtained quantitative data net productivity of photosynthesis, mineral and biological productivity, carbon deposition and net primary production in ontogenesis at the organism level. These indicators declined with age. Was set adaptive response of plants to a decline soil nutrient status, which expressed in an increase in activity the root surface relative to of the sheet surface to maintain photosynthesis on vital the required level.